Regex to match an IPv4 address at beginning

URL MATCH

Allows either a number (e.g. "1", "1.01") or a range (e.g. "1-2", "1.0 - 1.3"). Also allows whitespace on either side of the numbers.

Tests a numeric input to be between 0,00 < input <= 100,00. Decimals are optional but have at max 2 places.

Check shortcode

IPv4 Address Input

Eircode validation for new postcodes identifiers in Republic of Ireland. Case-insensetive for easier user input. Added optional space separator to follow same pattern as in UK post codes and in examples used in eircode spec.

It won't match single line comments like this one: //* This comment won't be match */ ^ see the double / Works in PHP without the g modifier.

Matches a CSS @media selector, matches outer {} curly brackets, works with every CSS code, minified too.

PHP Basic coding standard Naming Convension pattern: /^\pL_*$/

Captures a palindrome of 9 digits or less

auto prefix ("/") to folder

Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want

This regexp was written for Regex Tuesday Challenge - Week Six.

We had an issue where the "hosts=some_var" value could cause mass deployments if the wrong value was passed through. Specifically a comma with nothing surrounding it (i.e. "hosts=,"). This regex will allow us to fail when certain characters are present.

The best way to parse URL via Regex. This can be used in javascript, PHP, etc.

find retwitt hashtag on Twitters and add a label to highlight it.